<!DOCTYPE html>
<html >
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>当前输入框高亮显示</title>
    <style>
        body,form,h2,p,input{margin:0;padding:0;}
        body{color:#4f4f4f;font:14px/1.5 \5fae\8f6f\96c5\9ed1;}
        form{width:400px;background:#fef4eb;border:2px solid #f60;padding-bottom:10px;overflow:hidden;zoom:1;margin:10px auto;}
        form h2{color:#fe791e;font-size:16px;background:#ffebd7;border-bottom:2px solid #f60;padding:5px 10px;}
        form p{float:left;clear:both;width:100%;height:31px;margin-top:10px;line-height:31px;}
        form label,form input{float:left;}
        form label{width:100px;height:31px;text-align:right;}
        form input{border:0;font-family:\5fae\8f6f\96c5\9ed1;background:url(input.png) no-repeat;}
        form .f-text,form .f-text-high{width:203px;height:31px;padding-left:5px;line-height:31px;}
        form .f-text-high{background-position:0 -31px;}
        form .f-btn{color:#fff;width:104px;height:31px;cursor:pointer;font-size:16px;background:#f60;line-height:31px;border-radius:5px;}
    </style>
    <script type="text/javascript">
        window.onload = function ()
        {
            var aInput = document.getElementsByTagName("input");
            for (var i = 0; i<aInput.length - 1; i++)
            {
                aInput[i].onfocus = function ()
                {
                    this.className = "f-text-high"
                };
                aInput[i].onblur = function ()
                {
                    this.className = "f-text"
                }
            }
        };
    </script>
</head>
<body>
<form>
    <h2>用户登录</h2>
    <p><label>用户名：</label><input class="f-text" type="text" /></p>
    <p><label>密码：</label><input class="f-text" type="password" /></p>
    <p><label></label><input class="f-btn" type="button" value="登 录" /></p>
</form>
</body>
</html>
